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Simora [160]
3 years ago
15

What are two ways that scientists can study Earth's climate history?

Chemistry
2 answers:
Inessa [10]3 years ago
6 0
Records and previous occurrings
k0ka [10]3 years ago
5 0
<span>places and things are eroded.
</span><span>helller</span>
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Which phrase describes a valence electron?(1 point)an electron in the innermost orbit of an atom
devlian [24]

Answer:

an electron in the outer energy level of an atom

3 0
3 years ago
Look at the following enthalpy diagram. Select all that apply.
Drupady [299]

Answer:

Option 2 and 4 are correct

Explanation:

The reactants in the attached image have more enthalpy and hence less stability as they are more reactive. Thus, Product is more stable than the reactants.

This is an addition reaction in which two reactants add up to form the product.

Very less activation energy is required as the reactants themselves are unstable, possess high energy and hence are very reactive.

Reactants have more energy than the products.  

5 0
3 years ago
What is the SI unit used to measure the temperature of a substance?
navik [9.2K]

The SI unit for temperature is Kelvin.

7 0
3 years ago
A 0.175 M solution of an enantiomerically pure chiral compound D has an observed rotation of +0.27° in a 1-dm sample
-BARSIC- [3]

Answer:

The specific rotation of D is 11.60° mL/g dm

Explanation:

Given that:

The path length (l) =  1 dm

Observed rotation (∝) = + 0.27°

Molarity = 0.175 M

Molar mass = 133.0 g/mol

Concentration in (g/mL) = 0.175 mol/L × 133.0 g/mol

Concentration in (g/mL) = 23.275 g/L

Since 1 L = 1000 mL

Concentration in (g/mL) = 0.023275 g/mL

The specific rotation [∝] = ∝/(1×c)

= 0.27°/( 1  dm ×  0.023275 g/mL )

= 11.60° mL/g dm

Thus, the specific rotation of D is 11.60° mL/g dm

3 0
3 years ago
Which of the following compounds is an electrolyte?
docker41 [41]
The best and most correct answer among the choices provided by the question is the second choice , b. sodium hydroxide .
Hope my answer would be a great help for you.    If you have more questions feel free to ask here at Brainly.
8 0
4 years ago
Read 2 more answers
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